Retaining wall block



FIG. 1 is perspective view of a retaining wall block embodying my new design, as viewed toward the front, top and one side of the block;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is rear elevational view thereof. 

I claim the ornamental design for a retaining wall block, as shown and described. 